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CN102057805B - 自走式玉米收获机的变速轴 - Google Patents

自走式玉米收获机的变速轴 Download PDF

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CN102057805B
CN102057805B CN 201010508923 CN201010508923A CN102057805B CN 102057805 B CN102057805 B CN 102057805B CN 201010508923 CN201010508923 CN 201010508923 CN 201010508923 A CN201010508923 A CN 201010508923A CN 102057805 B CN102057805 B CN 102057805B
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shaft
speed
spline sleeve
passive
plunger
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CN102057805A (zh
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李保章
梁现平
陈九章
王凤娟
赵志伟
赵志杰
赵喜路
赵冰凯
苏瑞杰
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Shijiazhuang Wantong Machinery Manufacture Co ltd
Hebei University of Science and Technology
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Abstract

本发明公开了一种自走式玉米收获机的变速轴，包括
Figure DSA00000305640100011
瓦盒座、变速主轴、变速系统，其中变速系统由主动轴花键套、主动盘、被动盘花键套与被动盘、柱塞与缸体。该液动变速轴以油路控制油腔的进出油以推动被动盘移动，通过调节主动盘与被动盘间开口的大小实现收获机变速主轴的转速变化，实现无级调速，其结构简单，无级变速，其运行平稳低噪，故障率低，制造成本低。本发明可用于自走式玉米收获机上，用于驱动行走中间轴，进而实现玉米田的收获作业。

Description

自走式玉米收获机的变速轴
技术领域
本发明涉及一种农田作业机械的变速装置，具体地说是一种自走式玉米收获机的变速轴。
背景技术
现有的玉米收获机，变速机构多采用齿轮变速机构，结构复杂，噪声大，故障率高，制造成本高，传动不平稳。
发明内容
本发明要解决的技术问题，是提供一种自走式玉米收获机的变速轴，该变速轴为液动无级调速，结构简单，成本低廉，可提高变速过程中的平稳性，保证低噪低故障率。
本发明要为解决上述的技术问题，所采用的技术方案是：
一种自走式玉米收获机的变速轴，用于驱动自走式玉米收获机的行走中间轮，所述液动变速轴包括外轴、两瓦盒座、主轴、变速系统，所述变速系统包括主动轴花键套、主动盘、被动盘花键套与被动盘、柱塞与缸体，其中：
主动轴花键套与主动盘键连接；被动盘花键套与被动盘键连接，主动轴花键套与被动盘花键套键连接，油缸体与被动盘、被动盘花键套过盈配合，柱塞与缸体过盈配合；
柱塞两端设有密封件，其与油缸体、被动盘间形成油腔，被动盘的移动经油腔中进出油量的大小控制变速主轴的转速由主动盘与被动盘开口大小控制；
变速主轴的输出端经两套瓦合盖与瓦合座、调整套，与行走皮带轮(即行走中间轮)通过花键联接；
外轴经两瓦盒座与收获机的机架相联接；变速主轴经两瓦盒座中的轴承轴向固定在外轴中。
本发明提供的上述变速轴，以油路控制油腔的进出油以推动被动盘移动，通过调节主动盘与被动盘间开口的大小实现收获机变速主轴的转速变化，可实现无级变速，简化了变速结构，提高变速过程中的平稳性，降低噪声，降低故障率，并可降低成本。
作为本发明的优化，所述主轴中心设有轴向孔，柱塞上设有三个径向孔与轴向孔连通，三个径向孔间经一弧形槽互通；液压油经过轴向孔分别流向三个径向孔，最后流入油缸体的油槽。
油路的优化，可有效保证液动变速轴的调速效果。
柱塞的形状为阶梯轴状，油缸体中心处设有与之适配的阶梯孔。
本发明与现有技术相比，所取得的技术进步在于：将变速轴采用液动调速，油路控制油腔的进出油以推动被动盘移动，通过调节主动盘与被动盘间开口的大小实现收获机变速主轴的转速变化，该液动变速轴结构简单，无级变速，其运行平稳低噪，故障率低，可降低成本。本发明可用于玉米收获机上以驱动行走中间轴，进而进行玉米家田收获作业。
本发明下面将结合说明书附图与具体实施例作进一步详细说明。
附图说明
图1是本发明实施例的整体结构示意图；
图2为图1所示实施例的构件组成及相互位置关系的示意图。
图中：11-行走中间轮，16、18-瓦合座，17-外轴，19、35-瓦合盖，20、31、34-调整套，21-柱塞，22-缸体，23-被动盘，24-被动盘花键套，25-主动盘，26-主动轴花键套，27-油嘴，28-变速主轴，33-调整垫；由于篇幅有限，图中外轴17采用了省略画法；图中右箭头、上箭头表示进油方向，左箭头、下箭头表示回油方向。
具体实施方式
实施例
图1与图2所示为一种自走式玉米收获机的变速轴，用于驱动自走式玉米收获机的行走中间轮11速轴包括外轴17、两瓦盒座16与18、变速主轴28、变速系统。
变速系统包括主动轴花键套26、主动盘25、被动盘花键套24与被动盘23、柱塞21与缸体22。
主动轴花键套26与主动盘25键连接；被动盘花键套24与被动盘23键连接，主动轴花键套26与被动盘花键套24键连接，油缸体22与被动盘23、被动盘花键套24过盈配合，柱塞21与缸体22过盈配合。
柱塞21两端设有密封件，其与油缸体22、被动盘23间形成油腔，被动盘23的移动经油腔中进出油量的大小控制变速主轴28的转速由主动盘25与被动盘23开口大小控制。
变速主轴28的输出端经两套瓦合盖与瓦合座组合18与19、16与35，以及调整套20、31与34、调整垫33，与行走皮带轮11通过花键联接；
外轴17经两瓦盒座16、18与收获机的机架相联接；变速主轴28经两瓦盒座16、18中的轴承轴向固定在外轴17中。
变速主轴主轴28中心设有轴向孔，柱塞21上设有三个径向孔与轴向孔连通，三个径向孔间经一弧形槽实现互通。液压油经过轴向孔分别流向柱塞三个径向孔，最后流入油缸体22的油槽。
柱塞21的形状为阶梯轴状，油缸体22中心处设有与之适配的阶梯孔。

Claims (3)

1.一种自走式玉米收获机的变速轴，用于驱动自走式玉米收获机的行走中间轮，其特征在于：所述变速轴包括外轴(17)、两瓦合座(16、18)、变速主轴(28)、变速系统，所述变速系统包括主动轴花键套(26)、主动盘(25)、被动盘花键套(24)与被动盘(23)、柱塞(21)与油缸体(22)；
主动轴花键套(26)与主动盘(25)键连接；被动盘花键套(24)与被动盘(23)键连接，主动轴花键套(26)与被动盘花键套(24)键连接，油缸体(22)与被动盘(23)、被动盘花键套(24)过盈配合，柱塞(21)与油缸体(22)过盈配合；
柱塞(21)两端设有密封件，其与油缸体(22)、被动盘(23)间形成油腔，被动盘(23)的移动经油腔中进出油量的大小控制，变速主轴(28)的转速由主动盘(25)与被动盘(23)开口大小控制；
变速主轴(28)的输出端经两套瓦合盖与瓦合座组合(18、19，16、35)，以及调整套(20、31、34)、调整垫(33)，与行走皮带轮(11)通过花键联接；
外轴(17)经两瓦合座(16、18)与收获机的机架相联接；变速主轴(28)经两瓦合座(16、18)中的轴承轴向固定在外轴(17)中。
2.根据权利要求1所述的自走式玉米收获机的变速轴，其特征在于：所述变速主轴(28)中心设有轴向孔，柱塞(21)上设有三个径向孔与轴向孔连通，三个径向孔间经一弧形槽实现互通；液压油经过轴向孔分别流向柱塞(21)三个径向孔，最后流入油缸体(22)的油槽。
3.根据权利要求1或2所述的自走式玉米收获机的变速轴，其特征在于：柱塞(21)的形状为阶梯轴状，油缸体(22)中心处设有与之适配的阶梯孔。
CN 201010508923 2010-10-18 2010-10-18 自走式玉米收获机的变速轴 Expired - Fee Related CN102057805B (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2362270Y (zh) * 1998-12-29 2000-02-09 河北邢台联合收割机厂 一种改进的自走式联合收割机变速箱
CN2551009Y (zh) * 2002-02-23 2003-05-21 孙星钊 块根茎类作物收获机
CN201303516Y (zh) * 2008-11-13 2009-09-09 杭州前进齿轮箱集团股份有限公司 收割机用变速箱
CN202005145U (zh) * 2010-10-18 2011-10-12 石家庄万通机械制造有限公司 自走式玉米收获机的变速轴

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2362270Y (zh) * 1998-12-29 2000-02-09 河北邢台联合收割机厂 一种改进的自走式联合收割机变速箱
CN2551009Y (zh) * 2002-02-23 2003-05-21 孙星钊 块根茎类作物收获机
CN201303516Y (zh) * 2008-11-13 2009-09-09 杭州前进齿轮箱集团股份有限公司 收割机用变速箱
CN202005145U (zh) * 2010-10-18 2011-10-12 石家庄万通机械制造有限公司 自走式玉米收获机的变速轴

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